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Library's collection Library's IT development CancelIn this final assignment project, a mobile robot was made with a camera
for following direction of the signs. Only four kinds of signs are used. They are
turn left sign, turn right sign, turn back sign and stop sign. The picture captured by
the camera is changed into Grayscale Image. And then is changed into Binary
Image. Filtering process then takes place by using Sobel Operator. Sobel Operator
is used for finding the edges of the objects. And then Feature Extraction process
takes place in order to get objects by using Chain Code method. Template
Matching method is used for recognizing the object. In this method, the object
will be compared with the sign databases and results similarity value for each
database. The highest similarity value which is greater than 70 % determine the
type of the sign.
The experiment was done using various signs with different size and the
system able to recognize the signs good enough with the highest similarity value
was 85 % and the lowest similarity value was 70 %. The experiment was also
done in different position of the signs by rotating the sign in horizontal ways or
vertical ways. The maximum degree of rotation in horizontal ways for 3 cm x 3
cm signs was 20 degree and for 5 cm x 5 cm signs is 40 degree. And the
maximum degree of rotation for 5 cm x 5 cm signs was 20 degree.